Wireless power reception device
a technology of wireless power reception and wireless power, which is applied in the direction of transformers, basic electric elements, inductances, etc., can solve the problems of short power transmission distance and deterioration of magnetic substance properties, and achieve the effect of improving power transmission efficiency between wireless power transmitters and wireless power receivers
Active Publication Date: 2018-12-04
SCRAMOGE TECH LTD
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- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
This configuration effectively prevents magnetic substance saturation and enhances power transmission efficiency by concentrating the magnetic field within the reception coil, thereby improving the overall efficiency of wireless power transfer.
Problems solved by technology
Although the commercialization of the electromagnetic induction technology has been rapidly progressed around small-size devices, the power transmission distance is short.
However, according to the related art, when the magnet provided to the transmission coil of the wireless power transmitter is inserted into an inside of the transmission coil, a reverse magnetic field generated from the magnet is offset against a magnetic field generated from a magnetic substance of the wireless power receiver to increase a saturation current, so that the magnetic substance may be saturated, thereby deteriorating a property of the magnetic substance.
Method used
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[0027]Hereinafter, preferable embodiments will be described in detail with reference to accompanying drawings in such a manner that the embodiments may be easily carried out by those skilled in the art.
[0028]First, a wireless power receiver 10 according to one embodiment will be described with reference to FIGS. 1 to 4.
[0029]FIG. 1 is a plan view illustrating a wireless power receiver according to one embodiment. FIG. 2 is a perspective view illustrating the wireless power receiver according to one embodiment. FIG. 3 is a table illustrating a specification of a reception coil of the wireless power receiver according to one embodiment. FIG. 4 is a view illustrating a direction of a magnetic field formed on the reception coil when a magnetic substance saturation protective unit according to an embodiment is used.
[0030]First, referring to FIGS. 1 and 2, the wireless power receiver 10 may include a magnetic substance 100, a reception coil 200, and a magnetic substance saturation protect...
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Abstract
A wireless power reception device for wirelessly receiving electric power from a wireless power transmission device according to an embodiment of the present invention comprises: a magnetic body; a reception coil arranged on the magnetic body and coupled to a transmission coil of the wireless power transmission device to receive electric power; and a magnetic body saturation prevention unit arranged inside the reception coil to prevent the magnetic body from being saturated by an influence of an external magnetic field.
Description
TECHNICAL FIELD[0001]The embodiment relates to a wireless power transmission technique. More particularly, the embodiment relates to a wireless power receiver for preventing the property of a magnetic substance of the wireless power receiver from being deteriorated and improving the power transmission efficiency.BACKGROUND ART[0002]A wireless power transmission or a wireless energy transfer refers to a technology of wirelessly transferring electric energy to desired devices. In the 1800's, an electric motor or a transformer employing the principle of electromagnetic induction has been extensively used and then a method for transmitting electrical energy by irradiating electromagnetic waves, such as radio waves or lasers, has been suggested. Actually, electrical toothbrushes or electrical razors, which are frequently used in daily life, are charged based on the principle of electromagnetic induction. The electromagnetic induction refers to a phenomenon in which voltage is induced so ...
Claims
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IPC IPC(8): H02J50/70H02J5/00H02J50/90H01F27/28H01F27/36H02J50/10
CPCH02J50/70H01F27/2823H02J50/90H02J5/005H02J50/10H01F27/36H01F27/363H01F38/14
Inventor KIM, YANG HYUN
Owner SCRAMOGE TECH LTD